Home / 136,698.32-205,093.68-86,135.36

Finding the Fourth Proportional to 136,698.32, 205,093.68 and 86,135.36

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Solution

The fourth proportional to 136,698.32, 205,093.68 and 86,135.36 is: 129,232.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,698.32 : 205,093.68 = 86,135.36 : x
  2. Step 2: Convert to fraction form
    136,698.32/205,093.68 = 86,135.36/x
  3. Step 3: Cross multiply
    136,698.32x = 205,093.68 × 86,135.36
  4. Step 4: Simplify right side
    136,698.32x = 17,665,817,960.52
  5. Step 5: Solve for x
    x = 17,665,817,960.52/136,698.32
  6. Step 6: Final answer
    x = 129,232.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.